On Sep 2, 2004, at 5:29 AM, theUser BL wrote:
Hmmm...
And is it possible to port Suns JVM - as closed source - to an other OpenSource VM (like .net/mono , like ikvm do it as free JVM) ?
If Suns Java VM running on an OpenSource VM (like mono), I think it is easyer to bring it on new platforms. Because then, it is only needed to port the OpenSource VM. And for that VM it is allowed to public the steps between the different releases.
What you are basically proposing now is to write a (for example) x86 plus a partial Windows OS emulator that runs on Mono. Essentially this emulator would have to provide all the behavior that the given JVM you are trying to run expects from the processors and operating system for which it was originally built. In essence, this would fall somewhere on the spectrum between something like Bochs, and something like WINE.
This is would be a significantly harder undertaking even than creating an open source JVM. Java has at least made an attempt to create a binary format and interface to system service that is relatively neutral. An emulation of a specific hardware/OS platform would have to translate the idiosyncrasies of that platform in to the idiosyncrasies of every other platform.
I'm afraid there is no shortcut to what the already existing open source java VMs and class libraries (Kaffe, SableVM, GCJ, ikvm, GNU Classpath, etc) have undertaken.
-wilhelm
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